US 4,372,266 AGranted

Fuel injection apparatus for internal combustion engines

AssigneeDiesel Kiki Co., Ltd.

InventorsYasuhiro Hiyama, Hidekazu Oshizawa, Kenji Okamoto, Masayoshi Kobayashi

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Abstract

In a fuel injection apparatus comprising an actuator for driving a member for controlling the amount of fuel injected, a computing circuit for computing a first signal representing an optimum amount of fuel injected on the basis of the engine operation conditions and a signal generator for generating a second signal representing the amount of fuel injected from an injection nozzle, the signal generator has a detector for generating a position signal indicative of the position of needle valve of the injection nozzle at the instant of injection, a converting circuit for converting the position signal into an open area signal representing an open area of the injection nozzle and a computing circuit for computing a signal indicative of the actual amount of fuel injected on the basis of the open area signal.

Claims7

Dependent claims

A fuel injection apparatus for internal combustion engines, in which said apparatus has a fuel injection pump having a member for adjusting the amount of fuel injected from an injection nozzle, said apparatus comprising:

an actuator for driving said member;
a first signal generator for generating a first signal indicative of the optimum amount of fuel to be injected under the existing engine operation conditions;
a detector for generating a position signal indicative of the position of a needle valve of the injection nozzle at every instant;
a second signal generator for generating a second signal indicative of the actual amount of fuel injected on the basis of the change in said position signal;
means for comparing said first signal with said second signal;
and
a circuit for driving said actuator in accordance with the resulting signal from said comparing means so as to bring the actual amount of fuel injected into accord with the optimum amount.

4 more elements

Dependencies are inferred from the claim text.